installation: database does not exist or you do not have permissions

Hi
I am running the install part of nopcommerce on iis:
Now I am getting the error: database does not exist or you do not have permissions.
I tried both with existing and non existing database name.
I tried as on post has suggested to change authentication mode to mixed on sql server; but I was not able to accomplish that. SQl Management studio did allow me to any changes as all fields were dimmed out;
this problem did not exist when running nopcommerce  with source code from visual studio

check the security settings from your database


http://www.techrepublic.com/article/understanding-roles-in-sql-server-security/


Marc

I downloaded and installed ssms     (....a long story!!!) then this new ssms allowed me to change authentication mode to mixed
and this solved the problem: